A hockey puck is sliding across a frozen pond with an initial speed of 7.5 m/s. It comes to rest after sliding a distance of 23.7 m. What is the coefficient of kinetic friction between the puck and the ice?
v0x = initial speed = 7.5 m/s
vfx = final speed = 0 m/s
Δx = x distance traveled = 23.7 m
fk,IP = force of kinetic friction from ice on puck
NIP = normal force from ice on puck
WEP = weight force from earth on puck
mP = mass of puck
g = acceleration due to gravity
ƩFnet = m*a
ƩFx = -fk,IP = m*ax
ƩFy = NIP - WEP = m*ay → ay = 0 m/s^2 → NIP = mP*g
The Attempt at a Solution
I attempted this logic...
fk,IP = μk*NIP → (-m*ax)/(mP*g) = μk
But then I hit a wall when trying to find the x-acceleration. Help?